CVE-2026-101919
Hypershift: hypershift: unsanitized kubeconfig passthrough from tenant namespace to control plane
CVSS Score
8.8
EPSS Score
0.0%
EPSS Percentile
0th
A flaw was found in the HyperShift operator. The operator copies user-provided Kubernetes configuration (kubeconfig) secrets directly into the privileged control plane namespace without proper validation or sanitization. An authenticated user with cluster and secret creation permissions can exploit this vulnerability by supplying a configuration containing unauthorized executable plugins. When downstream controllers consume this configuration, an attacker can achieve arbitrary code execution within the control plane.
| CWE | CWE-20 |
| Vendor | red hat |
| Product | multicluster engine for kubernetes |
| Published | Oct 5, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
Red Hat / Multicluster Engine for Kubernetes
All versions affected